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linear equationn.Mathematics（名词）【数学】- An algebraic equation, such asy = 2 x + 7, in which the highest degree term in the variable or variables is of the first degree. The graph of such an equation is a straight line. 线性方程：代数方程，如y =2 x +7，其中任一个变量都为一次幂。这种方程的图形为一直线
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